Physics: Power and Resistance

Description

Power is the rate at which work is done. This is an essential topic for anyone studying physics
PatrickNoonan
Flashcards by PatrickNoonan, updated more than 1 year ago
PatrickNoonan
Created by PatrickNoonan about 11 years ago
1433
9

Resource summary

Question Answer
What is voltage? Voltage can be thought of as the pressure pushing charges along a conductor, while the electrical resistance of a conductor is a measure of how difficult it is to push the charges along.
What is the resistance of a material dependent on? The resistance (R) of a material depends on its length, cross-sectional area, and the resistivity , a number that depends on the material:
What is power? Power is the rate at which work is done.
1 W = ? J/s 1 W = 1 J/s
Which is cheaper? Power from a wall socket or power from a battery? Wall socket is much cheaper
Batteries produce AC or DC currents? DC
Wall sockets produce AC or DC current? AC
If R= p/I^2 then what is the resistance of a 12 watts on a 3 watt current? 1.33' ohm
Show full summary Hide full summary

Similar

Biology Revision - Y10 Mock
Tom Mitchell
Biology- Genes and Variation
Laura Perry
AQA Physics P1 Quiz
Bella Statham
Acids and Bases
Sarah Egan
Using GoConqr to teach science
Sarah Egan
Using GoConqr to study science
Sarah Egan
GCSE Combined Science
Derek Cumberbatch
Physics Revision
Tom Mitchell
The Circulatory System
Shane Buckley
Acids and Bases
silviaod119
Elements, Compounds and Mixtures
silviaod119